Attachment



l. B. ADDUCI ANTISKlDDING ATTACHMENT.

APPLICATION FILED APR. 28,19I9.

1,325,389. Patented Deo. 16,1919.

IllmlF1 im 7' Lim lwddci,

JOHN IB. ADD'U'CI, OF BOSTON, MASSACHUSETTS.

.ANTISKIDDING ATTACHMENT.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application led April 28, 1919. Serial No.A 293,219.

To all 'whom t may concern:

Be it known that I, JOHN B. ADDUGI, a citizen ot the United States, residing at Boston, in the county ot Suffolk and State ot Massachusetts, have invented certain new and usetul Improvements vin Antiskidding Attachments, ot which the following is a specification.

This invention relates to a device that can be quickly attached to the tire and rim ot anautomobile, either ot the pneumatic or cushion type, and which will prevent skidding, increase the tractional grip on the road surface, and at the same time will not mar the rim by rubbing or binding against it. It also requires no cutting or boring ot a rim or telly to place in position.

From three to six ot these attachments may be employed on a wheel.

The invention consists in the novel teatures ot construction hereinafter described, pointed out in the claims and shown in the accompanying drawings, in which Figure 1 is a side elevation ot a portion ot a wheel showing two ot my devices in place.

Fig. 2 is a section on the line 2--2 ot Fig. 1.

Fig. 3 is a detail perspective view ot a rubber block.

In practice it is not necessary to place the devices as close together as shown in the drawing, and in most cases tour to six to the wheel would be all that would be required, or three might be advantageously used on the wheels. In order to clearly show the device I have slightly enlarged some parts with respect to the size ot the tire.

In these drawings 1 designates the wheel` telly and 2 the tire. A U-shaped metal plate 3 is placed over the tire, gripping the same rmly when inflated, and this clip extends inwardly beyond the rim and telly, and preferably out ot contact with them.

Placed within the inner end portion ot the clip and transversely with respect to it, are two rubber blocks 5. These blocks are cut out or recessed as at 6 to engage the inner tace ot the telly. They serve as spacers tor the side members ot the clips, and as securing devices tor holding the clips in place. These rubber blocks are held 1n place by bolts 8. A suitable bore is ot course tormed slight rocking movement on the bolt.

while the block cannot turn over it has a In placing the clips in position they are so placed that a wheel spoke extends between the two blocks. The slight rocking movement ot the blocks allows giving under strains and slight play ot the clips on the wheel, limited as to creeping by the spoke extending between the blocks.

The rubber prevents any marring ot the iinish on the telly.

To prevent skidding the exterior bow portion ot the clips 3 are roughened in any suitable way, as by torming projections 4: on them. Y

These may be produced in any way, have any desired torm or arrangement, and be in any number. They should not be deep or sharp enough to injure the road surface, and at the same time should give a sulticient grip to prevent side slipping ot the wheel. They can be tormed in various ways and sizes depending on the weight ot the car with which they are to be used, and the kind ot work required ot'it, tor a heavy truck or tractor they wouldbe larger and heavier than tor a small runabout used only tor pleasure purposes and driven more or less on parkl roads trom which the commercial truck is excluded. V

What I claim is p1. In a device ot the kind described, metal U-shaped clips having a Vroughened exterior bow portion, said clip when in position engaging the sides ot a tire and extending inwardly beyond a wheel rim and telly, rubber blocks'vsecured in the inner end Ot the clip and adapted to engage the inner tace ot the telly, and means tor holding said blocks inplace, said means permitting slight rocking movement ot the blocks.

2. In a device ot the kind described, a U-shaped metal clip having projections tormed on its bow portion, said clip being adapted to embrace a tire, rim and telly, and engaging the tire on the tread portion und at the sides, rubber spacing blocks secured transversely in the open end of the olp and spacing the side members of the Clip from the rim and telly, seid blocks having abore and a squared opening at one end, and bolts having squared portions, the bolts passing though the clip and through the bores of the blocks, the squared portions of the bolts resting loosely n those of the blocks. 10

In testimony whereof I have iLHiXecl my signature.

JOHN B. ADDUCI. 

